1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0+ 3# 4# config_override.sh base override 5# 6# Combines base and override, removing any Kconfig options from base 7# that conflict with any in override, concatenating what remains and 8# sending the result to standard output. 9# 10# Copyright (C) IBM Corporation, 2017 11# 12# Authors: Paul E. McKenney <paulmck@linux.ibm.com> 13 14base=$1 15if test -r $base 16then 17 : 18else 19 echo Base file $base unreadable!!! 20 exit 1 21fi 22 23override=$2 24if test -r $override 25then 26 : 27else 28 echo Override file $override unreadable!!! 29 exit 1 30fi 31 32T=${TMPDIR-/tmp}/config_override.sh.$$ 33trap 'rm -rf $T' 0 34mkdir $T 35 36sed < $override -e 's/^/grep -v "/' -e 's/=.*$/="/' | 37 awk ' 38 { 39 if (last) 40 print last " |"; 41 last = $0; 42 } 43 END { 44 if (last) 45 print last; 46 }' > $T/script 47sh $T/script < $base 48cat $override 49